+データを開く
-基本情報
登録情報 | データベース: PDB / ID: 7ums | ||||||
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タイトル | Structure of the VP5*/VP8* assembly from the human rotavirus strain CDC-9 in complex with antibody 41 - Upright conformation | ||||||
要素 |
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キーワード | VIRUS / Rotavirus / human / CDC-9 / VP4 / VP5* / VP8* / antibody #41 / broadly neutralizing / cryo-EM | ||||||
機能・相同性 | 機能・相同性情報 viral intermediate capsid / host cell endoplasmic reticulum lumen / host cell rough endoplasmic reticulum / T=13 icosahedral viral capsid / permeabilization of host organelle membrane involved in viral entry into host cell / host cytoskeleton / viral outer capsid / host cell endoplasmic reticulum-Golgi intermediate compartment / host cell surface receptor binding / fusion of virus membrane with host plasma membrane ...viral intermediate capsid / host cell endoplasmic reticulum lumen / host cell rough endoplasmic reticulum / T=13 icosahedral viral capsid / permeabilization of host organelle membrane involved in viral entry into host cell / host cytoskeleton / viral outer capsid / host cell endoplasmic reticulum-Golgi intermediate compartment / host cell surface receptor binding / fusion of virus membrane with host plasma membrane / viral envelope / virion attachment to host cell / host cell plasma membrane / structural molecule activity / membrane / metal ion binding 類似検索 - 分子機能 | ||||||
生物種 | Rotavirus (ウイルス) Homo sapiens (ヒト) | ||||||
手法 | 電子顕微鏡法 / 単粒子再構成法 / クライオ電子顕微鏡法 / 解像度: 3.5 Å | ||||||
データ登録者 | Jenni, S. / Zongli, L. / Wang, Y. / Bessey, T. / Salgado, E.N. / Schmidt, A.G. / Greenberg, H.B. / Jiang, B. / Harrison, S.C. | ||||||
資金援助 | 米国, 1件
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引用 | ジャーナル: J Virol / 年: 2022 タイトル: Rotavirus VP4 Epitope of a Broadly Neutralizing Human Antibody Defined by Its Structure Bound with an Attenuated-Strain Virion. 著者: Simon Jenni / Zongli Li / Yuhuan Wang / Theresa Bessey / Eric N Salgado / Aaron G Schmidt / Harry B Greenberg / Baoming Jiang / Stephen C Harrison / 要旨: Rotavirus live-attenuated vaccines, both mono- and pentavalent, generate broadly heterotypic protection. B-cells isolated from adults encode neutralizing antibodies, some with affinity for VP5*, that ...Rotavirus live-attenuated vaccines, both mono- and pentavalent, generate broadly heterotypic protection. B-cells isolated from adults encode neutralizing antibodies, some with affinity for VP5*, that afford broad protection in mice. We have mapped the epitope of one such antibody by determining the high-resolution cryo-EM structure of its antigen-binding fragment (Fab) bound to the virion of a candidate vaccine strain, CDC-9. The Fab contacts both the distal end of a VP5* β-barrel domain and the two VP8* lectin-like domains at the tip of a projecting spike. Its interactions with VP8* do not impinge on the likely receptor-binding site, suggesting that the mechanism of neutralization is at a step subsequent to initial attachment. We also examined structures of CDC-9 virions from two different stages of serial passaging. Nearly all the VP4 (cleaved to VP8*/VP5*) spikes on particles from the earlier passage (wild-type isolate) had transitioned from the "upright" conformation present on fully infectious virions to the "reversed" conformation that is probably the end state of membrane insertion, unable to mediate penetration, consistent with the very low infectivity of the wild-type isolate. About half the VP4 spikes were upright on particles from the later passage, which had recovered substantial infectivity but had acquired an attenuated phenotype in neonatal rats. A mutation in VP4 that occurred during passaging appears to stabilize the interface at the apex of the spike and could account for the greater stability of the upright spikes on the late-passage, attenuated isolate. Rotavirus live-attenuated vaccines generate broadly heterotypic protection, and B-cells isolated from adults encode antibodies that are broadly protective in mice. Determining the structural and mechanistic basis of broad protection can contribute to understanding the current limitations of vaccine efficacy in developing countries. The structure of an attenuated human rotavirus isolate (CDC-9) bound with the Fab fragment of a broadly heterotypic protective antibody shows that protection is probably due to inhibition of the conformational transition in the viral spike protein (VP4) critical for viral penetration, rather than to inhibition of receptor binding. A comparison of structures of CDC-9 virus particles at two stages of serial passaging supports a proposed mechanism for initial steps in rotavirus membrane penetration. | ||||||
履歴 |
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-構造の表示
構造ビューア | 分子: MolmilJmol/JSmol |
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-ダウンロードとリンク
-ダウンロード
PDBx/mmCIF形式 | 7ums.cif.gz | 4.7 MB | 表示 | PDBx/mmCIF形式 |
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PDB形式 | pdb7ums.ent.gz | 表示 | PDB形式 | |
PDBx/mmJSON形式 | 7ums.json.gz | ツリー表示 | PDBx/mmJSON形式 | |
その他 | その他のダウンロード |
-検証レポート
文書・要旨 | 7ums_validation.pdf.gz | 1.2 MB | 表示 | wwPDB検証レポート |
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文書・詳細版 | 7ums_full_validation.pdf.gz | 1.3 MB | 表示 | |
XML形式データ | 7ums_validation.xml.gz | 325.5 KB | 表示 | |
CIF形式データ | 7ums_validation.cif.gz | 523.4 KB | 表示 | |
アーカイブディレクトリ | https://data.pdbj.org/pub/pdb/validation_reports/um/7ums ftp://data.pdbj.org/pub/pdb/validation_reports/um/7ums | HTTPS FTP |
-関連構造データ
関連構造データ | 26608MC 7umtC M: このデータのモデリングに利用したマップデータ C: 同じ文献を引用 (文献) |
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類似構造データ | 類似検索 - 機能・相同性F&H 検索 |
-リンク
-集合体
登録構造単位 |
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1 |
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-要素
-Outer capsid protein ... , 2種, 6分子 TUV123
#1: タンパク質 | 分子量: 26248.848 Da / 分子数: 3 / 由来タイプ: 組換発現 / 由来: (組換発現) Rotavirus (ウイルス) / 株: CDC-9 遺伝子: VP4, W907_45309gpVP4, W907_45314gpVP4, W907_45315gpVP4, W907_45321gpVP4, W907_45328gpVP4, W907_45346gpVP4 発現宿主: Chlorocebus aethiops (ミドリザル) / 参照: UniProt: X4YMN0 #2: タンパク質 | 分子量: 59605.254 Da / 分子数: 3 / 由来タイプ: 組換発現 / 由来: (組換発現) Rotavirus (ウイルス) / 株: CDC-9 遺伝子: VP4, W907_45309gpVP4, W907_45314gpVP4, W907_45315gpVP4, W907_45321gpVP4, W907_45328gpVP4, W907_45346gpVP4 発現宿主: Chlorocebus aethiops (ミドリザル) / 参照: UniProt: X4YMN0 |
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-タンパク質 , 2種, 36分子 ABCDEFGHIJKLMNOPQRabcdefghijkl...
#5: タンパク質 | 分子量: 44994.965 Da / 分子数: 18 / 由来タイプ: 組換発現 / 由来: (組換発現) Rotavirus (ウイルス) / 株: CDC-9 / 遺伝子: VP6 / 発現宿主: Chlorocebus aethiops (ミドリザル) / 参照: UniProt: A0A223GHC7 #6: タンパク質 | 分子量: 37435.934 Da / 分子数: 18 / 由来タイプ: 組換発現 / 由来: (組換発現) Rotavirus (ウイルス) / 株: CDC-9 遺伝子: VP7, NC78_51708gpVP7, NC78_52349gpVP7, NC78_52352gpVP7, NC78_52353gpVP7, NC78_52354gpVP7, NC78_52356gpVP7, NC78_52357gpVP7b, W907_45360gpVP7, W907_45361gpVP7, W907_45368gpVP7 発現宿主: Chlorocebus aethiops (ミドリザル) / 参照: UniProt: B1NP55 |
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-抗体 , 2種, 4分子 4657
#3: 抗体 | 分子量: 25386.260 Da / 分子数: 2 / 由来タイプ: 組換発現 / 由来: (組換発現) Homo sapiens (ヒト) / 細胞株 (発現宿主): HEK293 / 発現宿主: Homo sapiens (ヒト) #4: 抗体 | 分子量: 23322.598 Da / 分子数: 2 / 由来タイプ: 組換発現 / 由来: (組換発現) Homo sapiens (ヒト) / 細胞株 (発現宿主): HEK293 / 発現宿主: Homo sapiens (ヒト) |
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-糖 , 2種, 36分子
#7: 多糖 | beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta- ...beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose |
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#8: 糖 | ChemComp-NAG / |
-非ポリマー , 1種, 72分子
#9: 化合物 | ChemComp-CA / |
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-詳細
研究の焦点であるリガンドがあるか | N |
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-実験情報
-実験
実験 | 手法: 電子顕微鏡法 |
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EM実験 | 試料の集合状態: PARTICLE / 3次元再構成法: 単粒子再構成法 |
-試料調製
構成要素 |
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由来(天然) |
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由来(組換発現) |
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ウイルスについての詳細 | 中空か: NO / エンベロープを持つか: NO / 単離: STRAIN / タイプ: VIRION | ||||||||||||||||||||||||
緩衝液 | pH: 7.4 | ||||||||||||||||||||||||
試料 | 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES | ||||||||||||||||||||||||
急速凍結 | 凍結剤: ETHANE |
-電子顕微鏡撮影
実験機器 | モデル: Tecnai Polara / 画像提供: FEI Company |
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顕微鏡 | モデル: FEI POLARA 300 |
電子銃 | 電子線源: FIELD EMISSION GUN / 加速電圧: 300 kV / 照射モード: FLOOD BEAM |
電子レンズ | モード: BRIGHT FIELD / 最大 デフォーカス(公称値): 3500 nm / 最小 デフォーカス(公称値): 1000 nm |
撮影 | 電子線照射量: 60 e/Å2 フィルム・検出器のモデル: GATAN K2 SUMMIT (4k x 4k) |
-解析
ソフトウェア |
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CTF補正 | タイプ: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||
3次元再構成 | 解像度: 3.5 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 422920 / 対称性のタイプ: POINT | ||||||||||||||||||||||||
精密化 | 交差検証法: NONE 立体化学のターゲット値: GeoStd + Monomer Library + CDL v1.2 | ||||||||||||||||||||||||
原子変位パラメータ | Biso mean: 83.33 Å2 | ||||||||||||||||||||||||
拘束条件 |
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